The V-9985-W In-Wall Mixer provides active mixing for 1 balanced microphone input and 2 auxiliary inputs. Also supplied is an additional audio input (building page) with an override feature. The V-9985 mounts in a 4 gang deep electrical box and is supplied with a 4 gang White decorator style face plate. Up to 3 additional Remote Modules (V-9984) may be connected to the Main Control Module. Each Remote module adds 1 Balanced Microphone and 1 Auxiliary input. Two pair structured cable is used to connect remote input modules to the main mixer.